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Wave Optics question

2011 · Shift 0 · Q55

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JEE Main
Physics
Wave Optics
2011 · Shift 0 · Q55

Wave Optics question

2011 · Shift 0 · Q55

JEE MainPhysicsWave OpticsMCQ+4 / −1

This question has a paragraph followed by two statements, Statement

-1

and Statement

-2

. Of the given four alternatives after the statements, choose the one that describes the statements. A thin air film is formed by putting the convex surface of a plane-convex lens over a plane glass plane. With monochromatic light, this film gives an interference pattern due to light, reflected from the top (convex) surface and the bottom (glass plate) surface of the film. Statement -

1

: When light reflects from the air-glass plate interface, the reflected wave suffers a phase change of

\pi .

Statement -

2

: The center of the interference pattern is dark.

A
Statement - $1$ is true, Statement - $2$ is true, Statement - $2$ is the correct explanation of Statement - $1$
B
Statement - $1$ is true, Statement - $2$ is true, Statement - $2$ is not the correct explanation of Statement - $1$
C
Statement - $1$ is false, Statement - $2$ is true
D
Statement - $1$ is true, Statement - $2$ is false.

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